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EM636165TS-7L View Datasheet(PDF) - Etron Technology

Part NameEM636165TS-7L Etron
Etron Technology Etron
Description1Mega x 16 Synchronous DRAM (SDRAM)
EM636165TS-7L Datasheet PDF : 75 Pages
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EtronTech
1M x 16 SDRAM
EM636165
Operation Mode
Fully synchronous operations are performed to latch the commands at the positive edges of CLK.
Table 2 shows the truth table for the operation commands.
Table 2. Truth Table (Note (1), (2) )
Command
State CKEn-1 CKEn DQM(6) A11 A10 A0-9 CS# RAS# CAS# WE#
BankActivate
Idle(3)
H
X
X VV V L L H H
BankPrecharge
Any
HX
X VL X L L H L
PrechargeAll
Any
HX
X XH X L L H L
W rite
Active(3) H
X
X VL V L H L L
Write and AutoPrecharge
Active(3) H
X
X VH V L H L L
Read
Active(3) H
X
X VL V L H L H
Read and Autoprecharge
Active(3) H
X
X VH V L H L H
Mode Register Set
Idle
HX
X
VV V L L
LL
No-Operation
Any
HX
X XX X L H H H
Burst Stop
Active(4) H
X
X XX X L H H L
Device Deselect
Any
HX
X XX X H X X X
AutoRefresh
Idle
HH
X
XX X L L
LH
SelfRefresh Entry
Idle
HL
X
XX X L L
LH
SelfRefresh Exit
Idle
L
H
X XX X H X X X
(SelfRefresh)
LH HH
Clock Suspend Mode Entry
Active H L
X XX X X X X X
Power Down Mode Entry
Any(5)
H
L
X XX X H X X X
LH HH
Clock Suspend Mode Exit
Active L
H
X XX X X X X X
Power Down Mode Exit
Any
L
H
X XX X H X X X
(PowerDown)
LH HH
Data Write/Output Enable
Active H X
L XX X X X X X
Data Mask/Output Disable
Active H
X
H XX X X X
XX
Note:
1. V=Valid X=Don't Care L=Low level H=High level
2. CKEn signal is input level when commands are provided.
CKEn-1 signal is input level one clock cycle before the commands are provided.
3. These are states of bank designated by BS signal.
4. Device state is 1, 2, 4, 8, and full page burst operation.
5. Power Down Mode can not enter in the burst operation.
When this command is asserted in the burst cycle, device state is clock suspend mode.
6. LDQM and UDQM
Preliminary
6
Rev. 2.7 Mar. 2006
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